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Rettinger SD, Kennedy SC, Wu X, Saylors RL, Hafenrichter DG, Flye MW, Ponder KP.Rettinger SD, et al. Among authors: flye mw.Proc Natl Acad Sci U S A. 1994 Feb 15;91(4):1460-4. doi: 10.1073/pnas.91.4.1460.Proc Natl Acad Sci U S A. 1994.PMID: 8108431Free PMC article.